Ultra bright 3W Cree X-Lamp LED puts out up to 280 lumensDayLightning™ flash mode boosts 500+ lumens of lightning-like flashes for added day riding safety Custom TIR optics for maximum beam angle and throw5 modes1:30 ~ 10 hour runtimeUSB rechargeable internal Li-ion battery90gUSBUPC/EAN/GTIN: 745025036145